I really dont know whats going on with my truck, looking at videos of peoples speedometers with torque converters shows mme my converter or transmission or even my tune perhaps cant be working right. I roll onto the throttle hard from a roll or hit the throttle hard from a roll it will pretty much just spike to red line and the truck wont accelerate much at least untill i let off and roll onto the throttle easier, truck doesnt feel very fast either I dont know what it is . Just want this thing working right

PS not sure if this has to do with it at all, but sometimes when i come to a stop my truck will stall, or almost stall and rev up and down from 500-800 rpm over and over then equal out